<template>
  <div class="app-container calendar-list-container">

    <!-- 查询和其他操作 -->
    <div class="filter-container">
      <el-input clearable class="filter-item" style="width: 200px;" placeholder="请输入类目名称" v-model="listQuery.name"/>
      <el-button class="filter-item" type="primary" v-waves icon="el-icon-search" @click="handleFilter">查找</el-button>
      <el-button class="filter-item" type="primary" @click="handleCreate" icon="el-icon-edit">添加</el-button>
      <el-button class="filter-item" type="primary" :loading="downloadLoading" v-waves icon="el-icon-download" @click="handleDownload">导出</el-button>
    </div>

    <!-- 查询结果 -->
    <el-table size="small" :data="list" v-loading="listLoading" element-loading-text="正在查询中。。。" border fit highlight-current-row>
         <el-table-column type="expand">
         <template slot-scope="props">
          <el-form label-position="left" inline class="demo-table-expand">
            <el-form-item label="类别名称：">
              <span>{{ props.row.name }}</span>
            </el-form-item>
             <el-form-item label="类别级别:">
              <span>{{ props.row.parentId ===0 ? '一级类目' : '二级类目' }}</span>
              <span  v-if="props.row.parentId !==0"> ======> {{props.row.parentName}}</span>
            </el-form-item>
       
            <el-form-item label="排序:">
              <span>{{ props.row.sortOrder }}</span>
            </el-form-item>

            <el-form-item label="状态:">
              <span>{{ props.row.status ? '可用' : '禁用' }}</span>
            </el-form-item>

            <el-form-item label="创建时间:">
              <span>{{ props.row.createTime }}</span>
            </el-form-item>
            <el-form-item label="修改时间:">
              <span>{{ props.row.updateTime }}</span>
            </el-form-item>
           
            <el-form-item label="备注:">
              <span>{{ props.row.comment }}</span>
            </el-form-item>
          </el-form>          
        </template>
      </el-table-column>

      <el-table-column align="center" type="selection" width="55" prop="id"/>

      <el-table-column align="center" min-width="100px" label="名称" prop="name"/>

      
      <el-table-column align="center" min-width="100px" label="级别" prop="parentId"
        :filters="[{ text: '一级类目', value: 0 }, { text: '二级类目', value: undefined }]" :filter-method="filterLevel">
        <template slot-scope="scope">
          <el-tag :type="scope.row.parentId === 0 ? 'primary' : 'info' ">{{scope.row.parentId === 0 ? '一级类目' : '二级类目'}}</el-tag>
        </template>
      </el-table-column>   

      <el-table-column align="center" min-width="100px" label="父类名称" prop="parentName"/>
     
      <el-table-column align="center" min-width="100px" label="排序" prop="sortOrder"/>

      <el-table-column align="center" min-width="100px" label="状态" prop="status">
        <template slot-scope="scope">
          <el-tag :type="scope.row.status ? 'success' : 'error' ">{{scope.row.status ? '可用' : '禁用'}}</el-tag>
        </template>
      </el-table-column> 

      <el-table-column align="center" label="操作" width="250" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button type="primary"  icon="el-icon-edit" size="mini" @click="handleUpdate(scope.row)">编辑</el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini"  @click="handleDelete(scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <div class="pagination-container">
      <el-pagination background @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="listQuery.page"
        :page-sizes="[10,20,30,50]" :page-size="listQuery.limit" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </div>

    <!-- 添加或修改对话框 -->
    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form :rules="rules" ref="dataForm" :model="dataForm" status-icon label-position="left" label-width="100px" style='width: 400px; margin-left:50px;'>
        <el-form-item label="类目名称" prop="name">
          <el-input v-model="dataForm.name"></el-input>
        </el-form-item>
        <el-form-item label="类目级别" prop="level">
          <el-select v-model="level" placeholder="请选择">
            <el-option label="一级类目" value="L1">
            </el-option>
            <el-option label="二级类目" value="L2">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="父类目" prop="parentId" v-if="level === 'L2'">
          <el-select v-model="dataForm.parentId" placeholder="请选择"> 
            <el-option v-for="val in parentCats" :key="val" :label="val.name" :value="val.id"/> 
          </el-select>
        </el-form-item>
       
        <el-form-item label="排序" prop="sortOrder">
          <el-input type="number" v-model="dataForm.sortOrder" placeholder="数字越小越靠前"></el-input>
        </el-form-item>
         
        <el-form-item label="状态" prop="status" v-if="dialogStatus=='update'">
          <el-select v-model="dataForm.status" placeholder="请选择">
            <el-option label="禁用" :value=false>
            </el-option>
            <el-option label="正常" :value=true>
            </el-option>
          </el-select>
        </el-form-item>      
         
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button v-if="dialogStatus=='create'" type="primary" @click="createData">确定</el-button>
        <el-button v-else type="primary" @click="updateData">确定</el-button>
      </div>
    </el-dialog>

  </div>
</template>

<style>
.demo-table-expand {
  font-size: 0;
}
.demo-table-expand label {
  width: 90px;
  color: #99a9bf;
}
.demo-table-expand .el-form-item {
  margin-right: 0;
  margin-bottom: 0;
  width: 50%;
}
</style>

<script>
import { listCategory, listParentCats, createCategory, updateCategory, deleteCategory } from '@/api/category'
import { createStorage } from '@/api/storage'
import waves from '@/directive/waves' // 水波纹指令

export default {
  name: 'Category',
  directives: {
    waves
  },
  data() {
    return {
      list: undefined,
      total: undefined,
      //类目级别
      level: '',

      listLoading: true,
      listQuery: {
        page: 1,
        size: 10,
        name: undefined,
        sort: 'id'
      },

      //根类目集合
      parentCats: undefined,

      dataForm: {
        id: undefined,
        parentId: 0,
        parentName: '',
        name: '',
        status: undefined,
        sortOrder: undefined,
        createTime: undefined,
        updateTime: undefined,
        comment: undefined,
    
      },
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: '编辑',
        create: '创建'
      },
      rules: {
        name: [{ required: true, message: '类目名称不能为空', trigger: 'blur' }]
      },
      downloadLoading: false
    }
  },
  created() {
    this.getList()
    
  },
  methods: {
    getList() {
      this.listLoading = true
      listCategory(this.listQuery).then(response => {
        this.list = response.data.data.products
        //数据量
        this.total = response.data.data.page.total
        this.listLoading = false
      }).catch(() => {
        this.list = []
        this.total = 0
        this.listLoading = false
      })
    },

    //获取跟类目集合
    getListParentCats(){
      if(this.parentCats === undefined){
        listParentCats().then(res =>{
            this.parentCats=res.data.data
        })
      }
    },
    //点击搜索
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
    },
    //点击页数大小
    handleSizeChange(val) {
      this.listQuery.size = val
      this.getList()
    },
    //点击页数
    handleCurrentChange(val) {
      this.listQuery.page = val
      this.getList()
    },
    resetForm() {
      this.dataForm = {
        id: undefined,
        parentId: undefined,
        parentName: undefined,
        name: '',
        status: undefined,
        sortOrder: undefined,
        createTime: undefined,
        updateTime: undefined,
        comment: undefined,
      }
    },

    //类别筛选
    filterLevel(value, row) {
      if(value ===0){
      return row.parentId === value
      }else{
        return row.parentId !==0
      }
    },
    //打开添加姐面
    handleCreate() {
      this.level = ''

      this.resetForm()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
      this.getListParentCats()
    },
  
   //添加
    createData() {
      if(this.level ==='L1'){
        this.dataForm.parentId = 0
      }
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          createCategory(this.dataForm).then(response => {
            this.list.unshift(response.data.data)
            this.dialogFormVisible = false
            this.$notify({
              title: '成功',
              message: '创建成功',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    //打开修改界面
    handleUpdate(row) {
      this.dataForm = Object.assign({}, row)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
      if(this.dataForm.parentId === 0){
        this.level ='L1'
      }else{
        this.level ='L2'
      }
    },
    //修改
    updateData() {
       if(this.level ==='L1'){
        this.dataForm.parentId = 0
      }
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          updateCategory(this.dataForm).then(() => {
            for (const v of this.list) {
              if (v.id === this.dataForm.id) {
                const index = this.list.indexOf(v)
                this.list.splice(index, 1, this.dataForm)
                break
              }
            }
            this.dialogFormVisible = false
            this.$notify({
              title: '成功',
              message: '更新成功',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    //删除品类
    handleDelete(row) {
      deleteCategory(row).then(response => {
        this.$notify({
          title: '成功',
          message: '删除成功',
          type: 'success',
          duration: 2000
        })
        const index = this.list.indexOf(row)
        this.list.splice(index, 1)
      })
    },
    handleDownload() {
      this.downloadLoading = true
      import('@/vendor/Export2Excel').then(excel => {
        const tHeader = ['类目ID', '名称', '关键字', '级别', '父类目ID', '是否显示', '图标', '首页横幅', '类目页标题', '类目页介绍', '类目页横幅']
        const filterVal = ['id', 'name', 'keyword', 'level', 'parentId', 'isShow', 'iconUrl', 'bannerUrl', 'frontName', 'frontDesc', 'wapBannerUrl']
        excel.export_json_to_excel2(tHeader, this.list, filterVal, '商品类目信息')
        this.downloadLoading = false
      })
    }
  }
}
</script>
